997755582 has 16 divisors (see below), whose sum is σ = 2044182672. Its totient is φ = 324473280.

The previous prime is 997755557. The next prime is 997755599. The reversal of 997755582 is 285557799.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2027713 + ... + 2028204.

It is an arithmetic number, because the mean of its divisors is an integer number (127761417).

Almost surely, 2^997755582 is an apocalyptic number.

997755582 is an abundant number, since it is smaller than the sum of its proper divisors (1046427090).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997755582 is a wasteful number, since it uses less digits than its factorization.

997755582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4055963.

The product of its digits is 7938000, while the sum is 57.

The square root of 997755582 is about 31587.2693026795. The cubic root of 997755582 is about 999.2513002553.

The spelling of 997755582 in words is "nine hundred ninety-seven million, seven hundred fifty-five thousand, five hundred eighty-two".